A. Does not readily leave mark on paper but can be scratched by ordinary pocket knife Limonite Rusty yellowish Dark-brown color; 5-5½ brown some specimens have a shiny black surface; notice streak B. Cannot be scratched by an ordinary pocket knife Cassiterite Pale brown, pale Brown; 6-7 yellow or white submetallic; heavy; notice streak Hematite Dark reddish brown Dark brown color; 5½-6½ commonly occurs (may be as granular or softer) compact masses; notice streak Limonite Rusty, yellowish Dark brown color; 5-5½ brown some specimens have a shiny black surface; notice streak 5. METALLIC or SUBMETALLIC luster, BLACK color